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Photoreactivation of Bacteria Following UV Disinfection
Author(s): 
Pages: 125-128
Year: Issue:  9
Journal: ENVIRONMENTAL SCIENCE AND MANAGEMENT

Keyword:  紫外线消毒光复活作用大肠杆菌;
Abstract: 近年来,紫外线消毒技术在水处理中得到了越来越广泛的应用,它主要是利用短波紫外对微生物的伤害作用,通过在DNA中形成环丁烷嘧啶二聚体,阻碍基因的正常复制,从而导致细菌失活.但是细菌体内的光裂解酶在远紫外光和可见光作用下能够使失活的细菌重新获得活性,这就是光复活作用.低压消毒设备处理后大肠杆菌表现出了一定的光复活能力,但中压消毒设备能够有效的抑制其光复活作用;而噬肺军团菌在低压和中压设备处理后都表现出了很强的光复活能力.在应用紫外线消毒技术时光复活作用的影响不容忽视.
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